Apparatus for feeding pulverized fuel.



1, E. M UHLFELD.

APPARATUS FOR FEEDING PULVERIZED FUEL.

APPLICATION FILED Dic. 31. I9I3.

3,282,106, Patented oct. 22, m18. ""'m IILIIIIII A l Ils ...j ...W

-f tity, and any excess above such quantity which ma be taken up by the feeding mech- "ED STATESATENT OFFICE:

com. n, FELD, or scAnsnALl, New Your., AssreNon 'ro Loconorfrvn runvnn.- f rznn runt COMPANY, A CORPORATION or DELAWARE.

agesaioc.

To all lwhom t may concern.'

Be it known that I, JOHN E., MUHLFELD, of Scarsdale, in the county Vof Westchester and State of New York, have invented a certain newand useful Improvement in A paratus for Feeding Pulverized Fuel, of w 'ch improvement the following is a specification.

My invention relates to means for delivering pulverized fuel from a stora e receptacle to one or more supply conduits, through which it is conveyed to a desired point of delivery, 'and its object is to provide an apparatus of such character which shall be of simple and inexpensive construction and ready applicability, and. by which a continuous supply of pulverized fuel may be maintained, in desired and determined quananism 4wil be returned to the storage receptacle. y

The lim rovement claimed is hereinafter fully set orth.

` ln the accompanyin drawings: Figure 1 is a vertical section t rou h an'apparatus for feeding pulverized yfue ,-illustrating an embodiment of my invention; Fig. 2, atransverse section through the same, on the line a a of Fig. 1; Fig. 3, a section, similar to Fig. 1, showing estructural modification; Fig. 4, a transverse section through the same,

on the line b b of Fig. 3; Fig. 5, a similar section, on the 'line c c of Fig. 1; and, Fig. r6, a' partial section,`showing a further structural modification. Y Y

invention is herein exem lified as ap- M pliedy in connection with a p verized fuel storage receptacle, which may be of any desired form and dimensions, and which, not being, in and of' itself, of my presentinvention, is not herein shown. Reerring first to Figs. 1 and 2, in the practice of my invention, I provide for connection to the lower portion of a fuel receptacle, one or more 'conveyer channels or casings, 1, any desired number of which may be applied, and three being shown in this instance, said channels being open, through suitable inlets at or near their receiving ends to a fuel storage receptacle. A dischar e o ening, 1", is formed in the bottom of eaclx o the conveyer channels, and a rotatable feedin conveyer, is fitted to operate above the disc arge open' in such manner as to carry .pulverized fue to said openmg, The feeding conveyer is of the Speecation of Letters Patent.

Application mea December a1, 191s. serial,rraemaa'z.vv ,A j

APPARATUS ronrnnnme rULvnnvIzED runt.

' Patented oct. 22, 1918.

screw type, and comprises a helical blade, 2, i

which is vformed upon or secured to a hollow or tubularf shaft, 2", journaled in bearings, 11, inthe opposite ends of the conveyer channehfthe bearing at the right hand end only being shown in the drawings. Upon rotation being imparted to the conve er, in any suitable manner, pulverized fuel7 from the storage receptacle, which drops by gravity into the conveyer channel, will be moved longitudinally,.in the latter, and carried to the discharge opening, 1", thereof.

A measuring wheel, 3, the periphery/.of which is divided into a plurality of transverse ygrooves or recesses, 39, is secured upon a shaft, 4, which is mounted in bearings, 5*, on a casing, 5, within which the measuring wheel rotates and lits comparatively closely. The shaft, 4, may be rotated as found most .suitable under conditions of installation. A

delivery conduit, 6, located below the casing, 5, communicates therewith through an opening, 6a, in its top, located immediately below the measurin wheel, 3, and leads to a desired point o delivery, as a boiler furnace, the lower end of the water space of which is shown at A, in Figs. 1 and 3. It will be seen that a measured quantity of pulverized fuel will be carried from the conveyer channel to the delivery conduit, in each revolution of the measuring wheel, its quantity being dependent upon the width of face of said wheel, and the depth of its .peripheral grooves, and as a surplus of pulverized fuel 1s carried over the discharge opening by the conveyer, the delivery of a measured quantity of pulverized fuel is insured. y-lllhile only one discharge opening and one measuring wheel are shown in connection with a conveyer channel, two-or more may be applied, in thediscretion of the constructor, the number thereof being principally dependent upon the length o the conveyer channels and the desired rapidity of feed of femm. eenveyen eem, vlees e heee peste Reeds, i, e. one e night handed enf?. @ne

ether e e: handed eenen?, d `in enen cese mey be notate@ in 'ehe Seme neeben by e single rving mechanism.. The :feeding eenveye shaft is pmvded with leng'ndne 'Wings or venes, 2% ieee-'be between fthe apenings, 29, .ea-ifi Winge on ven-ee serving 'te gather :the emplee ue it, zth'eugh openings, the blade e' the return eenveyen Y The epeee wthn the eenveye ehenne between the bearing, i, and the ejeeent end e3? ehe channel may be n'tned fon eentenng 'lnb'ee'ng mete'el end preteetng the "bearing fem the heet ef the furnace, er@ 'Een the reception of menne fen rotating 'the cenveye's,

Five. 3 en je luerete e e'sme'ure mereeten embedyngihe eseene ep nefe pninepe of the eppee'hne ebene desenbee'l, and differing s'hmeemey hene'rexn in 'the 'peti-eule that the shafts ef the measuring wheels, '3, hnee ei" which ene ehewn en each shaft, in this immens@ ere eee'hed, in the ventee planes es, end pene-,Bel with, the eenveyen shafts, 2f, 22, instead being set et e night enge theneg es Le Eenmezc cese, The fshete ef 'the meesninng wheee may, es ehewn, ne vreten-ed by spur geene, fia, fined thereen and engaging similar gears, 2", on the eenveye" shafts.

As shown in Fig. V8, the snail-)12s UE measuring Wnees efe eceted 'reetvey te the feenfeyen she''ze sznely 'te the@ e Fge. 3 and 'bute the measunng Wheels eeen een'yeyer enamel j eeheree inte a. snge deT/eny eenen u, inf-Seeed @I ine@ ndependent @enduits n 1 ige, 2, 3, end 4L,

The ne :'eeng appenni-,us erieeve de senbef may be vnme es flo form, dlmen siens, and numeer of elements ef eeen eenf veyen channel or easing provided fon 'the fuel eteege eeepteee, in eeeerdanee 'with @perenne eendens and nsteleften iceqnnements, Without depentue from the spint and eheaeterstie 'eetmes of my invenien, e

ZI daim es my nventon and desire te eecnre by Lettes Patent: Y

ln en :apparatus for feeding puvenzed fuel, the eembinaten, Wzh e fuel eenveyer y@kennel having e lewe? dsehefge epenng, Enel delivery conduit extending below seid opening, meens fer eenveyn- `ee 'tnzeugh the chenne Le endnenessee opening, meens :for ferenserrng fuel, in meesned quantities, inem seid epenlng te the Enel elveny conduit, en @nenne for remmng 'en'tnensened ne, 'fehnen'n seid. wens- "ennng Ineens, 'abo the neeeivng inlet 'the eenveyen enemne.,

2,. En an apparatus fer eeng puvenzed ne, the eemfnneten, wzh e feel eenveyen ehenne having e, lower eeherge opening, of :Snel `deve] eendeieexending below seid Opening, e eenfveyer neteebe 1n reni@ channel for conveying; ue te seid Welling, menne "fen reneermng ue, in meesuned nenteS, 'from seid Opening in the :fuel deeennt, en e eenveyen refaetebe Within seiniet epeeed eem/eye?, ienne turning enmneee fuel fw ehe necemmg ine'", nnenee,

3. en app/annees Een :feeding pulverzed fuel, the eembneten, with e fuel eenve er Sendai?, having e receiving opening en e lower iseheee elw-biet, ei? e fuel deveny eenu't entenng beewsed entet, mee-ns Within @eid eenveyer eendnt fer eenveyng 'ne theethnough ne and .eeneee seid ou lee, means fen tnenenng fuel in meeened quantities from. seid entet te the me@ dsewery een-duit, and e second Ineens wenn: seid eene/@yer eeneut "Een netummg nntens fexefl fuel to the feeeving opening,

geen@ C. Fmnmn. 

